Page 10 of 10 · 57 explainers
Knowledge base
More explainers from the knowledge base. Each one names what you need to know first, works through the method, and says where it usually goes wrong.
Method GeometryHow to Use the Pythagorean TheoremThree steps, and the only decision is whether the side you want is the hypotenuse or one of the legs.
Concept StatisticsWhat Is an Average? Three Different AnswersAn average is a single number standing in for a whole set. There are three because there are three reasonable ways to choose it.
Method StatisticsHow to Find Mean, Median and ModeThree short procedures. The only one with a trap is the median, and the trap is forgetting to sort.